Spurred by a trailer for a new film, “Do I Sound Gay” found some interesting explorations of gay identity on the web. Three bits of video on different facets: 
http://www.nytimes.com/2015/06/23/opinion/who-sounds-gay.html?_r=0
Next the fascinating world of Polari, a British gay mid-century slang, here captured in a short film.
Finally, a doc I saw a few years back called “The Butch Factor” –not about language per se, but about gay men and their relationship to masculinity, something that was once such a complicated topic (at least to my generation, or at least to me), but seems, in a welcome development, to be less fraught for many.
A Few Reasonable Words 